These 9"x12" interoffice envelopes are built with sturdy 28 lb. paper stock, ensuring durability and reliability in containing documents. The punched holes on both sides allow for quick content verification without the need to open the envelope, streamlining office workflows. Utilizing five columns maximizes space, facilitating clear and organized signatures for interdepartmental communication. The string-and-button closure provides both convenient access and secure sealing, maintaining document integrity during transit. Packaged in sets of 100, these envelopes offer excellent value, reducing the need for frequent restocking and ensuring a consistent supply for office use.